Heat olive oil over medium-high heat. Add garlic and cook 1 minute. Remove from heat.
Stir in white wine vinegar, heavy cream, Dijon mustard, honey and salt. Return to heat and cook on medium-high until slightly thickened. Stir in tarragon.
Arrange green beans on a platter and drizzle with sauce. Sprinkle with almonds. Serves 4.
Variation: You may substitute fresh thyme or dill for tarragon.